Tableau does not import all the dates in column from csv file

Question

I am trying to import 'Dates' from 'Date column' from.csv file into tableau. But, missing some Dates in tableau. I don't have any filters in tableau

Below image: Excel file has Dates categorized as 'Forecast' and 'Historical'. Tableau shows only the Historical dates, and forecast dates are imported as NULL. Dates column is all formatted a date in.csv file

Please help me!!

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Answer 1

Is it possible to change the data type in the csv to string? Or do the change on connecting to Tableau? If you can get the "date" field into Tableau as string, it's straightforward to convert to a date within Tableau.

DATE, DATEPARSE and MAKEDATE all change non-dates to dates in Tableau. (for more details about the date conversions: https://tarsolutions.co.uk/blog/dates-in-tableau-the-ultimate-guide/#convert )